Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Deplorable Member
 
Porsche-O-Phile's Avatar
 
Join Date: Feb 2004
Location: A Rock Surrounded by a Whole lot of Water
Posts: 32,455
Garage
Anyone know how to replace a/c compressor clutch?

The clutch is siezing on my 951's a/c compressor (doesn't turn freely) but there's still freon circulating in the system. That, coupled with the fact that the car smells like burning clutch whenever you kick the a/c on seems to validate this diagnosis. Anyway, I need to replace it.

There's a nut that appears at first glance to hold the pulley / clutch assembly; it screws onto a threaded shaft that runs lengthwise down the long axis of the compressor. Removing the nut alone does NOT allow me to remove the clutch / pulley assembly. There are threads on the inside of the countersunk "hole" in the pulley to accomodate the nut, which leads me to believe some sort of weird special tool is required to screw onto the threaded shaft and simultaneously onto the pulley to "unscrew" or "back" the pulley off the compressor shaft. Is this correct? Anyone know what kind of tool it is and where to get it? I sure hope this isn't another $600 Porsche tool that I'll use maybe 3 times in my life. . .
__________________
'74 911 Targa 2.7 (in storage, hoping to finish "someday"), 2001 Mercedes SLK 320 (with a few AMG fun bits), '85 BMW K100, a few surfboards

Black Cars Matter
Old 09-02-2004, 09:27 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Wolf1's Avatar
 
Join Date: Jan 2003
Location: Idaho Falls, ID
Posts: 1,199
You are correct.....You will need a tool for this.

However, I don't think its a Porsche specific puller. A standard a/c hub puller should do the trick.
__________________
75 914 - Undecided.
80 931 - Gone, but not forgotten.
72 914 - old toy- sold.
And a whole bunch of German scrap metal shaped like 924's.


Old enough to know better, and stupid enough to do it anyway!
Old 09-02-2004, 09:52 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Parrothead member
 
VINMAN's Avatar
 
Join Date: Jul 2003
Location: Monmouth county, NJ USA
Posts: 11,428
I pulled mine off with a regular hub puller. are you sure the compressor is good too? I found out the hard way after changing the clutch on a car then found out the comp was causing the clutch to go bad.
__________________
Vinny
Red '86 944, 05 Ford Super Duty Dually '02 Ram 3500 Diesel 4x4 Dually, '07Jeep Wrangler '62 Mercury Meteor '90 Harley 1200 XL
"Live your Life in such a way that the Westboro Baptist Church will want to picket your funeral."
Old 09-03-2004, 03:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Moderator
 
AFJuvat's Avatar
 
Join Date: Feb 2001
Location: Viera FL
Posts: 5,643
You remove that nut (12mm) preferably with an impact wrench (yeah, it is that tight).

The clutch plate pulls off at that point. In the center of the hub, there are a few snap rings that hold the pulley to the compressor. after you remove those snap rings, the pulley should lift off fairly easily.

AFJuvat
__________________
Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann.

Ihr Brunnen der nutzlosen Porsche Information
Old 09-03-2004, 06:31 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Deplorable Member
 
Porsche-O-Phile's Avatar
 
Join Date: Feb 2004
Location: A Rock Surrounded by a Whole lot of Water
Posts: 32,455
Garage
Thanks guys - yea, I'm pretty sure the compressor is okay. The pulley is clearly the thing that's bad. I suppose the compressor COULD be bad too, but there's freon in the system so it has no leaks AFAIK. The pulley (with the belt off) feels like it's binding and makes a hint of a metallic noise, almost like there's a bad bearing or rusted bushing in there somewhere. Looking at the picture above, I see no bearings, so I can only assume there was foreign object or rust damage to where the pieces rotate against each other.

I'll be ripping into it this weekend and I'll let you know how it all works (or doesn't) out. Also, FWIW it's possible to remove the nut with a regular ratchet; it helps to have an assistant hold either the pulley or wrench though (a vice might work if you're working solo).
__________________
'74 911 Targa 2.7 (in storage, hoping to finish "someday"), 2001 Mercedes SLK 320 (with a few AMG fun bits), '85 BMW K100, a few surfboards

Black Cars Matter
Old 09-03-2004, 08:37 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
ae1969's Avatar
 
Join Date: Jul 2001
Location: Edmonton, Alberta, Canada
Posts: 4,530
Send a message via ICQ to ae1969
Let us know how this goes........... I may have to tackle this in the NA right away........

How much are the parts for this anyways??? I guess after 200K miles I should be happy it lasted this long.
__________________
Alex - PCA Polar Region - Boxster Muncher
86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD
www.edmontonhomelife.com
www.edmontonrealestate.ws
Old 09-03-2004, 08:52 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 05:49 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.